gdltraj {adehabitat} | R Documentation |
Gets the parts of the trajectories stored in an object of class
ltraj
of type II (time recorded), corresponding to a specified
time period.
gdltraj(x, min, max, type = c("POSIXct", "sec", "min", "hour", "mday", "mon", "year", "wday", "yday"))
x |
an object of class ltraj of type II (time recorded) |
min |
numeric. The beginning of the period to consider |
max |
numeric. The end of the period to consider |
type |
character. The time units of min and
max |
The limits of the period to consider may correspond to any of the
components of the list of class POSIXlt
(hour, day, month,
etc.; see help(POSIXlt)
), or to dates stored in objects of
class POSIXct
(see examples).
an object of class ltraj
.
Clement Calenge clement.calenge@oncfs.gouv.fr
ltraj
for further information about objects of
class ltraj
, POSIXlt
for further information
about objects of class POSIXlt
data(puechcirc) plot(puechcirc, perani = FALSE) ## Gets all the relocations collected ## between midnight and 3H AM toto <- gdltraj(puechcirc, min = 0, max = 3, type="hour") plot(toto, perani = FALSE) ## Gets all relocations collected between the 15th ## and the 25th august 1993 lim <- as.POSIXct(strptime(c("15/08/1993", "25/08/1993"), "%d/%m/%Y")) tutu <- gdltraj(puechcirc, min = lim[1], max = lim[2], type="POSIXct") plot(tutu, perani = FALSE)